1 Four substances were mixed with a clear liquid. The observations are recorded in the table
shown below.
Substance
Appearance Before Mixing
Appearance of Mixture
Pale amber liquid
1
Amber liquid
2
Red crystals
Red liquid
3
Clear liquid
Green liquid
4
White powder
White liquid
Based on the observations, which mixture produced the best evidence that a new substance
was formed?
A
Substance 1
B
Substance 2
с
Substance 3
D
Substance 4

Standing in the sunlight and feeling the heat on your face (uv radiation is entering the skin, converting to infrared radiation, and is absorbed by your tissues)orstanding near a fire and feeling the heat on your skin (infrared radiation transfer)

The net force is 100

Answer is: the equilibrium  shifts toward the reactants, to the left side of chemical reaction.it is because lead(ii) nitrate dissociates in water: pb(no₃)₂ → pb²⁺(aq) + 2no₃⁻(aq).according to lechatelier's principle, the position of equilibrium moves to counteract thechange (more lead cations, common ion), the position of equilibrium will move so that the concentration ofproducts decrease and concentration of reactants of chemical reaction increase.read more on -